Ten years after the launch of Tinder, some long-term online daters say endless swiping has been bad for their mental health.Listen to This ArticleOpen this article in the New York Times Audio app on iOS.Abby, 28, has been on dating apps for eight years, bouncing between OkCupid, Bumble, Tinder, eHarmony, Match, WooPlus, Coffee Meets Bagel and Hinge. A committed user, she can easily spend two or more hours a day piling up matches, messaging back and forth, and planning dates…